This is a beautiful story, full of suspense and courage. It's set in a world where the Forest has taken over all the space and humans have to live in small isolated communities inside a high crumbling wall, going out for supplies and always on the lookout for the many dangers coming from the Forest. As an adult, I'd have happily read a much longer book set in that world, and I can imagine a great animation movie based on it! as it is, it's quite short (just over 100 pages) and perfect for children who like adventures and exploring. I love the illustrations by Emily Gravett.